Radiator for automobiles.



- No. 891,802. PATBNTED JUNE 23, 1908; M. STEINER.

RADIATOR FOR AUTOMOBILES.

APPLIOATION FILED 33.15, 190s.

WITNESSES: INVENTOR BY I A ORNEY MAX S TEINER, OFNEWARK, NEW JERSEY.

RADIATOR FOR AUTOMOBILES.

Specification ot Letters Patent.

- 1 Patented June 23, 1908.

Application filed rebma 15,1908. S erial no, 416,023.

To all whom it mag conceal Be it known that I,MAx-STE1 NER,:a citizen of the United States, residing at Newark,

' in the county of Essexand State of New Improvements in Radiators for Automobiles and'I do hereby declare the following to -be a the case with. the usual form of radiator tube. The invention is illustrated in the accent i view of two of .t

Jersey, have'lnvented certai-nnew and useful full, clear, and exact description of the invention, such as will enable others skilled 'in the art to which'itappertains to .make and use the same, referencebeing hadjo the ac-' companyin drawings, and to figures of refe ,eren'ce mar ed thereon, which form-a part of this s ecification. i

This lnvention relates to a radiator for automobiles which is durable and strong iand is easily manufactured, and is ofa disposition that makes repairing extremely easy and also composed of short tubes.

acture oithe tube an easy matter, since the finished tube is easil withdrawnl'rom the mandrel on which it- Is formed, which is not panying drawing, in which Figurei' radiator showin the tubes. Fig.'2 is'a side Ire tubes placed side by side to show their relation.

a face new of a small part'of a The tubes 10 are arranged to-abut on their ends 11 and are of full width at that point. Each-tube is provided with a helical groove 12 which passes around the tube and forms a channel in the shapeof a helix, and these channels provide for the passage of water between the tubes both horizontally and verticall'y, but twisting the current sufficiently to retard the water to an extent to make its passage of long enough duration to thoroughly cool it. The groove 12 in each tube preferably stops short ofthe' ends-so that the ends .abut and are readily united by the solder 13 shown in Fig. ,1, which'solder closes the space between the ends of the tube and prevents leakage at that point. -When'these other as shown in tubes are made they are usually formed on a mandrel, and when they are completed they are easily screwed off the mandrel, which is not the casein a great many styles of tubes having transverse channels which make a colla sible-mandrel necessary, and these collapsi 1e mandreis being expensive, the radiator tubes are necessarily high priced.

The ridges 14 which are formed by the groove 12 in its eonvolutions, are preferablyof the full width ofthe ends-of the tube 10. so that they abut asin Fig. 2 1to prevent the water from passing, except throu h the ohan nels provided therefor. gives a'bi surface for cooling, as the corrugated sur ace of the tube is morerextensive than if the tube were stra" ht. The tubes are preferably arran ed in re ation to one an- I 2, that is with the ridges 14 abuttin so that the. grooves 12 This he ical groove come together'an give a-fairly free channel for the water to pass through.

I It will be seen from this construction, since. the tubes are staggered, that the water is shown in Fig; 1, as d' erent dispositions mifiht bernade of the tubes in a radiator, I avingthus described my invention, what Iclaim is 1. A radiator consisting of a series of round tubes, each tube having a single helical groove in its periphery, the groovebeing flat and leaving flat contacting surfaces between the tubes.

2. A radiator consisting of a series of round tubes, each tube having a flat helical groove 1 in its periphery, the groove having a pitch to -form' flat contacting surfaces between the tubes of awidth approximately that of thegroove.

In testimony, that I claim the foregoing, I

have hereunto set my hand this 13th day of February 1908.

I MAX STEINER. Witnesses: v WM. H. CAMFIELD E. A. BE L. a 

